US3170814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning sewer systems
Assignee: Terra Chemical Corp
•
Filing: 1963-08-26
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Granted: 1965-02-23
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Stroia
- 👤 Ronald L Voda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:59
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF REMOVING FLOCCULATABLE ACCUMULATIONS AND BUOYANT MATERIALS HELD FROM FLOATING BY THE ACCUMULATIONS FROM A SEWER SYSTEM WHICH COMPRISES ADDING TO A CATCH BASIN OF THE SYSTEM AN EFFECTIVE PROPORTION OF A WATER SOLUBLE POLYELECTROLYTIC ORGANIC POLYMER, SUBSEQUENTLY MIXING SAID POLYMER WITH THE FLOCCULATABLE ACCUMULATIONS AND THE BUOYANT MATERIALS BY UTILIZING THE RAIN WATER ENTERING SAID SYSTEM TO FORM A FLOCCULENT MIXTURE WHICH FREES THE BUOYANT MATERIALS, WHEREBY THE FLOCCULENT MIXTURE AND THE BUOYANT MATERIALS ARE CARRIED BY THE RAIN WATER THROUGH THE SYSTEM TO THE POINT OF DISCHARGE.
Claim 2
Independent Claim
91 words
A METHOD OF REMOVING FLOCCULATABLE ACCUMULATIONS AND BUOYANT MATERIALS HELD FROM FLOATING BY THE ACCUMULATIONS FROM A SEWER SYSTEM WHICH COMPRISES ADDING TO A CATCH BASIN OF THE SYSTEM AN EFFECTIVE PROPORTION OF A WATER SOLUBLE POLYELECTROLYTIC ORGANIC POLYMER, SUBSEQUENTLY MIXING SAID POLYMER WITH THE FLOCCULATABLE ACCUMULATIONS AND THE BUOYANT MATERIALS BY UTILIZING THE RAIN WATER ENTERING SAID SYSTEM TO FORM A FLOCCULENT MIXTURE WHICH FREES THE BUOYANT MATERIALS, WHEREBY THE FLOCCULENT MIXTURE AND THE BUOYANT MATERIALS ARE CARRIED BY THE RAIN WATER THROUGH THE SYSTEM TO THE POINT OF DISCHARGE.
References Cited (Backward Citations)
US3066095A
Cited
US3080264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |